Stepnaya area, well 24, 4940-4950 m, Dagestan (Triassic of Russian Federation)

Where: Russian Federation (44.8° N, 46.1° E: paleocoordinates 23.8° N, 45.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Dem'yanovskaya Formation, Spathian (251.3 - 247.2 Ma)

• 4940-4950 m deep in well

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: mold/impression

Primary reference: V. A. Gavrilova. 1998. Rannetriasovye klarayi (Bivalvia) Vostochnogo Predkavkaz'ya I Mangyshlaka. Byulleten Moskovskogo Obshchestva Ispytatelei Prirody, Otdel Geologicheskiy 73(1):29-36 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98553: authorized by Matthew Clapham, entered by Matthew Clapham on 09.10.2010, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Entoliidae
Entolioides ussuricus Bittner 1899 scallop
 Ostreida - Posidoniidae
"Claraia orbicularis" = Posidonomya orbicularis
"Claraia orbicularis" = Posidonomya orbicularis Richthofen 1860 oyster
n. ssp. dagestanica